$OpenBSD: patch-spectool_gtk_spectral_c,v 1.1 2017/05/17 23:21:55 espie Exp $

Index: spectool_gtk_spectral.c
--- spectool_gtk_spectral.c.orig
+++ spectool_gtk_spectral.c
@@ -415,9 +415,9 @@ static gboolean spectool_spectral_legend_expose(GtkWid
 	cairo_pattern_t *pattern;
 	int cp;
 
-	g_return_if_fail(widget != NULL);
-	g_return_if_fail(aux != NULL);
-	g_return_if_fail(IS_SPECTOOL_SPECTRAL(aux));
+	g_return_val_if_fail(widget != NULL, FALSE);
+	g_return_val_if_fail(aux != NULL, FALSE);
+	g_return_val_if_fail(IS_SPECTOOL_SPECTRAL(aux), FALSE);
 
 	spectral = SPECTOOL_SPECTRAL(aux);
 
